diff --git a/.dockerignore b/.dockerignore
index 5b7fcc1..69b613a 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -20,6 +20,9 @@ logs/
 
 # Dependencies (install fresh in container)
 node_modules/
+# Local-only lockfile: a stale one pins old foliate-js commits into builds
+# (npm reuses name@version without re-resolving the git pin)
+package-lock.json
 
 # Environment
 .env